辐射源个体特征提取技术综述

An Overview of Individual Feature Extraction Techniques

特征提取是辐射源个体识别技术的关键,也是实际应用中必须解决的首要问题。从接收信号的暂态和稳态两个方面对现有的个体特征提取技术进行了综述,指出各种特征提取技术的适用范围及关键问题。同时结合个体识别接收设备需要,对所提取的特征参量在工程应用中的测量条件及局限性进行了归纳分析与对比。最后,指出了目前辐射源个体特征提取技术存在的问题,以及个体识别技术未来研究方向。

Feature extraction is the key to emitter individual identification technology, but ＇also the primary issue that should be solved in practical applications. From both transient aspect and steady- state aspect of the re ceived signal, the exiting techniques of transmitter individual feature extraction are reviewed, the application scope and key issues of different extraction techniques are summarized. Also, in combination with requirements of the individual identification receiver, both the measuring conditions and limitations of the extracted feature parameters in engineering application are analysed and compared. Finally, the problems of existing extraction techniques are presented, as well as certain future research directions of individual identification technology.